A Study of the Packaging of a Small Engine : 1st Report Relationship between Vibration and Noise

Abstract

Noise sources of an engine can be roughly classified into exhaust noise, suction noise and engine surface noise. The exhaust and suction noise can be effectively reduced by attaching mufflers, but it is not always easy to reduce the noise emitting from the engine surface. The authors come to the conclusion that there is no way except enclosing the engine in a package to drastically reduce the engine surface noise. This paper shows the relation between the noise and vibration of a package enclosing a small engine.